Wrestling is an ancient martial art that uses grappling type techniques such as clinch fighting, throws and takedowns, joint locks, pins and other grappling holds. A wrestling bout is a physical competition, generally between two people, who attempt to gain and maintain a superior position. Wrestling is one of the oldest of martial arts with references to it as early as the Iliad that recounts the Trojan War in the 13th or 12th century BC. There are a wide range of styles with varying rules with both traditional historic and modern styles. Wrestling techniques have been incorporated into other martial arts as well as military hand-to-hand combat systems.